public class ThreeThreadGuessNumber {
public static void main(String[] args) {
Number number=new Number();
number.giveNumberThread.start();
number.guessNumberThread1.start();
number.guessNumberThread2.start();
}
}
public class Number implements Runnable {
final int SMALLER=-1,LARGER=1,SUCCESS=8;
int realNumber1,realNumber2,guessNumber1,guessNumber2,min=0,max=100,message=SMALLER;
boolean pleaseGuess=false,isGiveNumber=false;
Thread giveNumberThread,guessNumberThread1,guessNumberThread2;
Number(){
giveNumberThread=new Thread(this);
guessNumberThread1 = new Thread(this);
guessNumberThread2 = new Thread(this);
}
public void run() {
for(int count=1;true;count++) {
setMessage(count);
if(message==SUCCESS)
return;
}
}
public synchronized void setMessage(int count) {
if(Thread.currentThread()==giveNumberThread&&isGiveNumber==false) {
realNumber1=(int)(Math.random()*100)+1;
realNumber2=(int)(Math.random()*100)+1;
System.out.println("随机给你一个1至100之间的数,猜猜是多少?");
isGiveNumber=true;
pleaseGuess=true;
}
if(Thread.currentThread()==giveNumberThread) {
while(pleaseGuess==true)
try { wait();
}
catch(InterruptedException e) {}
if(realNumber1>guessNumber1&& realNumber2>guessNumber2) {
message=SMALLER;
System.out.println("你猜小了");
}
else if(realNumber1<guessNumber1) {
message=LARGER;
System.out.println("你猜大了");
}
else {
message=SUCCESS;
System.out.println("恭喜,你猜对了");
}
pleaseGuess=true;
}
if(Thread.currentThread()==guessNumberThread1&&isGiveNumber==true) {
while(pleaseGuess==false)
try { wait();
}
catch(InterruptedException e) {}
if(message==SMALLER) {
min=guessNumber1;
guessNumber1=(min+max)/2;
System.out.println("我第"+count+"次猜这个数是:"+guessNumber1);
}
else if(message==LARGER) {
max=guessNumber1;
guessNumber1=(min+max)/2;
System.out.println("我第"+count+"次猜这个数是:"+guessNumber1);
}
pleaseGuess=false;
}
if(Thread.currentThread()==guessNumberThread2&&isGiveNumber==true) {
while(pleaseGuess==false)
try { wait();
}
catch(InterruptedException e) {}
if(message==SMALLER) {
min=guessNumber2;
guessNumber2=(min+max)/2;
System.out.println("我第"+count+"次猜这个数是:"+guessNumber2);
}
else if(message==LARGER) {
max=guessNumber2;
guessNumber2=(min+max)/2;
System.out.println("我第"+count+"次猜这个数是:"+guessNumber2);
}
pleaseGuess=false;
}
notifyAll();
}
}